Improvement in gas-regulators



WILLIAM H. POUNDS, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THOMAS J.MARTIN AND DAVID W. STUART, OF SAME PLACE.

IMPROVEMENT IN GAS-REGULATORS.

Specification forming part of Letters Patent No. 62,948, dated May 4,1875 application filed March 22, 1875.

To all whom it may concern:

Be it known that I, WILLIAM H. POUNDS, of Philadelphia, Pennsylvania,have invented certain Improvements in Gas-Regulators, of which thefollowing is a specification:

My invention relates .to improvements in the construction of that classof gas-regulators in which a flexible diaphragm is so combined with avalve that the latter will insure the transmission of a uniform flow ofgas of a determinate pressure to the burners; and the main objects of myinvention are ready access to the interior of the instrument, the readyadjustability of the latter, and general simplicity and efficiency inconstruction.

These objects I attain in the manner which I will now proceed todescribe, reference being had to the accompanying drawing, whichexhibits a vertical section of my improved regulator.

A is the body of this regulator, and the inlet branch to and outletbranch 1) form parts of this body. To the branch to is screwed acoupling, B, the lower end d of which is prepared for attachment to themain gas-pipe of any building or room containing the burners, a thimble,6, being screwed to the branch 11 for attachment to thedistributing-pipe. Near the upper edge of the body A is formed ashoulder, h, bounded by an annular flange, i, and to this shoulder isconfined the flexible diaphragm G, by means of a screw'ring, H, thethread of which is adapted to the internally-threaded portion of thesaid flange t, the ring having in its upper edge notches, as shown inFig. 2, for receiving a suitable instrument, by which it may be screweddown tight onto the flexible diaphragm. The upper portion of theinterior of the flange i is without a screw-thread, and receives thelower edge of the cover I, which rests on the screw-ring H, and fitsloosely in its place, so as to be readily detached therefrom, the saidcover having, in the present instance, two pins, (r, Fig. 3, which canbe introduced into notches y in the flange, and thence, by turning thecover, into grooves o; other devices may, however, be employed forconfining and readily releasing the said cover. The

central portion of the central diaphragm is clamped by and between thetwo plates M and N, the latter having a threaded projection screwed intothe hub of the upper plate M, both this hub and a projection on theunder side of the lower plate being six-sided, or of any other form forfacilitating the screwing of the plates together, and tightly confiningthe diaphragm between them.

A packing for embracing the spindle p of the conical valve D iscontained within a recess, w, of the plate N, the upper portion of thespindle being threaded for the reception of the nut t and jam-nut u, theformer of which bears on the hub of the plate M.

As in other gas-regulators of this class the diaphragm G will rise orfall as the pressure of gas increases or decreases, and the inletopeningf will be expanded or contracted accordingly.

The detachable cover I permits ready access to be had to the interior ofthe instrument, either for the purpose of vertically adjusting the valveby means of the nuts t and a, or by the addition of weights to thediaphragm.

In the top of the cover is an opening, a, to which is adapted a valve,m, opening downward,so that air may be freely admitted to the interiorof the instrument as long as the latter remains entire and performs itsoperation properly; but should the diaphragm become damaged, and permitthe escape of gas into the cover, the valve will be closed, and preventthe gas from passing into the room.

I claim as my invention 1. The combination, in a gas-regulator, of thebody A, its flange z, grooves v, and notches y, the diaphragm G andcover I provided with pins a or, adapted to said grooves and notches, asand for the purpose set forth.

2. The combination of the cover: I, inclosing a chamber above thediaphragm of a gasregulator, and a valve, m, opening downward, as andfor the purpose set forth.

3. The combination of the spindle p, clamping-plate N, having a threadedprojection for the reception of the clamping-plate M, and jam-nut t,bearing on the plate M, as set forth.

4. The combination of the spiud1ep,c1amp- In testimony whereof I havesigned my ing-plates M N, and packing w, confined in a name to thisspecification in the presence of recess in the plate N, as specified.two subscribing Witnesses.

5. The combination of the body A, its flange i and shoulder h, thescrew-ring H, WM. H. POUNDS. adapted to the threaded interior of theflange Witnesses:

'i. and the diaphragm G, clamped upon the HUBERT HOWSON,

shoulder by the screw-ring, as set forth. HARRY SMITH.

